Machine for securing heads in cylindrical containers



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MACHINE FOR SECURING HEADS IN CYLINDRICAL CONTAINERS File@ April l1, 1935 3 Sheets-Sheet 1 HV- I" i zz MACHINE'. FOR SECURING HEADS IN CYLINDRICAL CONTAINERS Filed April l1, '1955 3 Sheets-Sheet 2 MACHINE FOR SECURING HEADS IN CYLINDRICAL CONTAINERS J-lllll" 75 l /7 Z5 mum ""'l fg@ M f UM f4 24 37 J* l Il) 35 I [42@ l Q36* Z3 gra] zi f I 4; 27

z' Il, Z? l Nad Z5 l I 2.9 'U f4' 2* I\ i? Patented Jan. 18, 1938 MACHINE FOR SECURING HEADS IN CYLIN- D'RICAL CONTAINERS Albert H. Schmidtke, St. Joseph, Mich., assignor, by mesne assignments, to Seymour & Peck Company, Chicago, Ill., a corporation of Dela- Application April 11, 1935, Serial No. 15,784

12 Claims.

Cylindrical containers have been made up of a side wall of plywood having a metal strip surrounding each end adapted to surround a circular wooden head. An object of this invention is to provide a ready means for securing this head in the container.

This and other objects, as will hereinafter appear, are accomplished by this invention which is fully described in the following specication and shown in the accompanying drawings, in which:-

Figure 1 is a side elevation of a hand-operated machine embodying the invention;

Fig. 2 is a longitudinal sectional View of a shell with the first head in place but not secured therein;

Fig. 3 is the same turned end for end after the first head has been secured therein;

Fig. 4 is the same filled with both heads secured therein;

Fig. 5 is an enlarged view on the line 5-5 of Fig. 1;

Fig. 6 is an enlarged top plan view of Fig. 1;

Fig. '1 is an enlarged partial sectional view on y the line 1-1 of Fig. 1 showing a support for the shell when inserting the rst head;

Fig. 8 is a similar view showing a .support for the shell while inserting the second head;

Figs. 9, 10, and 11 are partial side elevations of the mechanism shown in Fig. 1 showing the crimping mechanism in three positions;

Fig. 12 is a partial enlarged vertical section on the line I2 of Fig. 10;

Fig. 13 is a similar section on the line I3 of Fig. 11; and

Fig. 14 is a perspective View of a modified form of support for the shell.

Containers in the stages shown in Figs. 2, 3, and 4 each consists of a cylindrical shell I4, preferably formed from a rectangular panel of ply- Wood, to the ends of which are fastened striplike bands I5 of metal by means of staples or the like I6. A circular head I1 tting snugly within the band I5 is then inserted at each end of the shell, and the present invention relates to apparatus for securing these heads in place.

The embodiment illustrated comprises a base I8 carrying a standard I9 to which a block 20 is adjustably secured by means of set screws or the like 2|. In inserting the rst head a support 22, shown in detail in Fig. '1, is secured to the base as by means of a screw 23. This support is of such a size as to t rather snugly within the band I5 so that the end thrust of the shell I4 while the first head is being secured will be taken by the support 22.

Cri

In axial alignment with the shell I4 and support 22 (Fig. 1) is a plunger 24 slidably mounted in the block 20. This plunger (Fig. 12) has a foot 25 secured at its lower end as by means of a screw 26. Surrounding the foot 25 and slidably mounted on the plunger 24 is a cup-shaped member 21. This member has a series of longitudinal internal grooves 28 which are wider at the top than at the bottom so as to provide a series of splines 29 which are wider at the outside than at the inside'. The foot 25 has a series of radiating fins 30, one of which lies in each of the grooves.

The interior of the cup-shaped member 21 is bored or otherwise formed to provide a cylinder 3l which, however, is interrupted by the grooves 28 and terminates at its upper end in a series of. inclined faces 32, the purpose of which will later be described. The lower inner edge of the member 21 is internally chamfered at 33 to assist in placing this member over the top of the shell.

A hand-operated lever 34 is pivotally mounted at 35 on the block 20 and is operatively connected through a pin 36 and link 31 with a pin 38 on the plunger 24, this plunger being counterbalanced in all positions as by means of a spring 39 secured to an arm 40 on the block 20. The pin 38 is operative in a slot 31a in the link 31. The lever 34 also carries a pin 4I which operates in a slot I2a in a link 42, the opposite end of this link connecting through a pin 43 with an ear 21P- on the cup-shaped member 21. It will be understood that there are two of the links 31 and 42, one of each on each side of the lever 34.

With the mechanism in the upper position shown in Fig. 9 a shell having the lower end still open is inserted over the support 22 and a circular head I1 is inserted. A wood member of the same length as the plywood shell and substantially filling the same is placed therein during the rst crimping operation to insure against splitting the shell. The operating lever is then pulled down so as to force the cup-shaped member 21 over the top of the shell, thereby causing the inclined faces 32 to engage the top edge of the metal band I5 and to cause it to be crimped inwardly to the position I5a of Fig. 12. Initially, the cup alone will have engaged with the work, and later, as the band edge is forced inwardly, 'the foot also will engage therewith. When the cup is at its lowermost position, as shown in Fig. 10, the pin 38 may have traveled some distance down in the slots 31a of the pull links, as shown in Fig. 10.

As the lever 34 continues its downward movement, as shown in Fig. 11, the link 31 will cause the plunger 24 to descend, as shown in Figs. 11 and 13, until the foot 25 is pressed firmly against the crimped upper portion of the metal strip-like band which now assumes the position l5b of Fig. 13 and the crimping operation is completed, and the head |1 is rmly locked in the shell. If it is now desired to similarly lock a head in the opposite end of this shell the support 22 is removed and a new support |22 (Fig. 8) is inserted in its place, so that the top yof the shell will now stand in the same relation to the crimping member that it did in the operation which has `just been described.

The operating mechanism is both simple and effectve. The arrangement of links provides, in effect, a duplex toggle mechanism which is characterized by the following action: When the operating lever starts down (see Fig. 9), a thrust are exerting'pressures against the work, but with-j out any aid from the pull links 31. The movement up to this point, during which the operating lever has advanced perhaps 45, constitutes the rst stage of the operation.

When the lever point 4| moves past the line between the pivotal centers 35 and 43 the second stage is reached. The links 31 now exert a down pull to advance the foot against the work while the pressure exerted through the thrust links upon the cup is gradually released. The parts during this stage are in the positions shown in Figs. 11 and 13. Continuing, the pull links move in to operate through leverages of increasing power until nally the needed pressure has been applied to the work. During the lastpart of the movement the thrust links .have allowed the lever point 4| to swing upwardly until near the end, without resistance due to the slip connection afforded by their elongated slots. Near the end of this movement a pull is exerted upon the thrust links whereby the cup is lifted slightly, as indicated in Fig. 13, thereby tending to free the cup for subsequent disengagement from the work. On the return stroke of the operating lever, the spring exerts a counterforce suncient to balance partially or completely the weight of the par-ts which require lifting to their initial positions.

vIt will be observed that the action just described is peculiar vin Vthat there are two stages of movement each characterized .by the working links exerting at the start a minimum leverage which increases as the movement proceeds; that there is little or no resistance on the part of the non-working links and associated parts while the other-set of links are doing their work; that in these sequential vstages of movement there is utilized a single operating lever whose movementrange is conveniently smallperhaps only 90; that the rate of advance of the cup in this rst stage is perhapstwice as fast as that of the foot in the second stage, due to the diierence in the radii of the points 4| and 36; that the thrust links areactive only in the rst stage, and at the conclusion of the second stageyof movement, whereas it is only in the second stage that the `pull links do any work; and that the cup which is fitted tightly around the work is moved away therefrom at the conclusion of the down stroke of the operating lever, so as to facilitate ready disengagement of the cup from the work on the upstroke of the lever.

When the shell is filled with a light material the support |22 may be used, whereas when the shell is lled with a heavy material, like steel rods, too much effort is expended lifting the shells on and olf the support. Consequently, a flat base I 8'r1 (Fig. 14) is provided with a guide I8b which is adjustably secured thereon by bolts I8c so as to position the cylindrical shell in proper alignment.

In order to use this base, adjustment of the block 20 is required because of the difference in height from the support 22.

I claim:

1. Means for crimping a metal band of substantially uniform height about a circular head, said means comprising a support for a shell having such a band to be crimped, a standard associated with the support, a lever pivotally carried by the standard, a member operably connected to the lever and adapted to surround the outer edge of the metal band and having a series of surfaces separated by V-shaped grooves and inclined inwardly at substantially and adapted to engage the outer edge of the metal bandv at intervals therealong so asto crimp the metal band and bend it inwardly, and a second member having outwardly extending V-shaped iins operable in the grooves and said member being operably connected to the lever for pressing the crimped and inwardly bent edge of the metal band down against the head.

2. Means for crimping a metal band of substantially uniform height about a circular head, said means comprising a support for a shell having such a band to be crimped, means for crimpa circular head, a support for a shell having suchA a band to be crimped, means for crimping the outer edge of the metal band and bending it `inwardly and downwardly into a position substantially 45 from the head, and means for pressing this crimped edge down substantially flat and into contact with the head, the rst mentioned means being cup-shaped and adapted to slide over the metal band and having internal longitudinal ribs which engage the metal band at intervals, and the second mentioned means being slidable within the first mentioned member and having' ribs interdigitating with the ribs of the rst mentioned means and movable relative thereto to bear upon the angularly bent and crimped portion of said band.

4. In means for crimping a metal band about a circular head, a support for a shell having such a band to be crimped, means for crimping the outer edge of the metal band inwardly and downwardly into a position substantially 45 from the head, and `means for pressing this crimped edge down substantially flat and into contact with the head, the rst mentioned means being cup-shaped and adapted to rslide over the metal band and having internal longitudinal V- shaped ribs, and the second mentioned means being slidable within the first mentioned means and having V-shaped grooves within which said ribs are slidable, the lower part of the ribs in the cup-shaped means being cut away to admit the metal band in the cup-shaped means.

5. In means for crimping a metal band about a circular head, a support for a shell having such a band to be crimped, means for crimping the outer edge of the metal band and bending it inwardly and downwardly into a position substantially 45 from the head, and means for pressing this crimped edge down substantially flat and into contact with the head, the rst mentioned means being cup-shaped and adapted to slide over the metal band and having V- shaped internal longitudinal ribs, and the second mentioned means being slidable within the first mentioned means and having V-shaped grooves within which said ribs are slidable, the lower part of the ribs in the cup-shaped means being cut away to admit the metal band in the cup-shaped means, and said ribs terminating at the cut away portion in inwardly and upwardly inclined surfaces.

6. In means for crimping a metal band about a circular head, a base having a support for a cylindrical shell having such a band to be crimped, an upright carried by the base, a plunger slidably mounted in the upright on the axis of the shell, a foot on the plunger, a cupshaped member slidable on the plunger having a series of spaced inclined surfaces, a lever fulcrumed on the upright, a linkage operably connecting the lever to the cup-shaped member, a linkage operably connecting the lever to the plunger, the first linkage operating in ladvance of the second linkage whereby movement of the lever will cause the cup-shaped member to crimp the metal band and bend it inwardly and further movement of the lever will cause the foot to press the crimped edge against the head, and means for counterbalancing the lever and parts movable thereby in various adjusted positions.

7. In means for crimping a metal band about a circular head, a support for a shell having such a band to be crimped, a standard associated with the support, a lever pivotally carried by the standard, a first member operably connected to the lever for crimping and bending the metal band inwardly, and a second member operably connected to the lever for pressing the inwardly crimped edges of the metal band down against the head, the first member being operably connected to the lever through a pair of thrust links while the second member is operably connected to the lever through a pair of pull links.

8. In means for crimping a metal band about a circular head, a support for a shell having such a band to be crimped, a standard associated with the support, a lever pivotally carried by the standard, a first member operably connected to the lever for crimping the metal band inwardly, and a second member operably connected to the lever for pressing the inwardly crimped edges of the metal band down against the head, the first member being operably connected to the lever through a pair of thrust links while the second member is operably connected to the lever through a pair of pull links, the second member continuing the crimping operation after the first member has completed its crimping operation and is being withdrawn.

9. In means for crimping a metal band about a circular head, a support for a shell having such a band to be crimped, a standard associated with the support, a lever pivotally carried by the standard, a rst member operably connected to the lever for crimping the metal band inwardly, and a second member operably connected to the lever for pressing the inwardly crimped edges of the metal band down against the head, the first member being operably connected to the lever through a pair of thrust links' while the second member is operably connected to the lever through a pair of pull links, the second member continuing the crimping operation after the first member has completed its crimping operation and is being withdrawn, the second member lying within the first.

10. In means for crimping a metal band about a circular head, a support for a shell having such a band to be crimped, a standard associated with the support, a lever pivotally carried by the standard, a member operably connected to the lever and adapted to surround the outer edge of the metal band and having a series of distinct, circumferentially spaced separated surfaces eX- tending inwardly and adapted to engage the outer edge of the metal band at intervals therealong so as to crimp the metal band and bend it inwardly, and a second member operably connected to the lever for pressing the inwardly crimped edges of the metal band down against the head.

11, In means for crimping a metal band about a circular head, a support for a shell having such a band to be crimped, a standard associated with the support, a lever pivotally carried by the standard, a member operably connected to the lever and adapted to surround the outer edge of the metal band and having a series of distinct, circumferentially spaced and beveled crimping elements adapted to engage the outer edge of the metal band at intervals therealong so as to crimp metal band and bend it inwardly, and a second member having spaced fins extending between the crimping elements, said second member being operably connected to the lever for pressing the inwardly bent and crimped edge of the metal band down against the head.

12. In means for crimping a metal band about a circular head, a support for a shell having such a band to be crimped, a standard associated with the support, a lever pivotally carried by the standard, a member operably connected to the lever and adapted to surround the outer edge of the metal band and having a circular series of spaced tooth-like crimping elements adapted to engage the outer edge of the metal band at intervals therealong so as to crimp the metal band and bend it inwardly, and a second member having spaced ns extending between the crimping elements, said second member being operably connected to the lever for pressing the .inwardly crimped edges of the metal band down against the head.

ALBERT H. SCHMIDTKE. 

